Owen's pre-build thread - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 20 Old 07-19-16, 02:38 PM Thread Starter
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Re: Owen's pre-build thread

Not really a major update here, but I'm getting closer to decision time on a few things and more input is required.

1) I have ordered a pair of UXL-18 subs from Mark at Mach 5, which are in production (I think). I'm really looking forward to these.

2) I'm looking at whole house wiring items at the same time, since I still have the basement at least opened up. I am contemplating putting in distributed coax (for when I cut cable and get an OTA antenna), as well as cat5/cat6 network cable, both throughout the house or as best as I can manage.

My tentative plan for now is to run a (network cable) line up from the main floor where the modem is to the attic, and have a small hub/switch there to distribute the drops to the 3 bedrooms.

The coax needs more planning, but I'm thinking coax IN to the attic from the antenna (mounted up high on the side of the house), to a dual out splitter, one line for upstairs (3 bedrooms) and one line run to the basement to split again to downstairs (living room, theatre, rec room, and garage)

My main question is what type of cables should I go for?

1) Coax: I think RG6 is the go-to for coax, so that was my plan.

2) Network: I'm pretty sure on Cat6 over Cat5, because I'd like to run a gigabit switch to all locations. What I'm not 100% sure of is the various flavours of "plenum rated", "in wall rated", "riser rated", etc. Some is jacketed, some isn't, there are more versions than I remembered. Would something like the following be suitable for running in-wall?

http://www.cablesonsale.ca/index.php...ble-black.html

http://www.cablesonsale.ca/index.php...wg-yellow.html

http://www.cablesonsale.ca/index.php...ble-black.html

http://www.cablesalescanada.com/inde...oducts_id=2651

http://www.cablesalescanada.com/inde...oducts_id=8448

http://www.cablesalescanada.com/inde...oducts_id=2602

Edit: Sorry for the huge list, just want to make sure.

OR similar... the jacketed versions are significantly more expensive, so if it isn't required I'd rather not pay the extra.

- OJ -

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Last edited by Owen Bartley; 07-19-16 at 02:54 PM.
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post #12 of 20 Old 07-19-16, 03:27 PM
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Re: Owen's pre-build thread

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Owen Bartley wrote: View Post
Thanks Tony! I'd love to put more distance between the rear seats and the wall, but I don't think I have the room. I do plan to build a couple of diffusers into the rear wall, and likely some absorption as well.



Thanks Tonto. I'll need to check your progress! I thought about rotating and having it open to the larger area, but we decided that it would be better to keep a small enclosed theatre, and an open play area for the kids (5 months and 2 1/2 - lots of time left for running around like little crazy people). I'm pushing the screen back as far as possible to get a little more distance to the main viewing seats, and I'm planning to treat the whole front wall (except cutouts for the speakers if required) with 2" or more of absorption material. That SHOULD help to minimize the negative effects of being close to the wall. I'll also have corner traps back there, anywhere I can squeeze them in.

Oh, and what you don't see in that plan is that to the left of the other support pole is the furnace, water heater, and laundry, which is going to be enclosed as well.

Be careful with placing diffusion right near your head/seating against a rear wall. I believe that absorption is your better option. Here's a good video about diffusion:

http://realtraps.com/video_diffusors.htm
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post #13 of 20 Old 07-19-16, 03:47 PM Thread Starter
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Re: Owen's pre-build thread

Thanks Todd. The diffusion is more for the front row, which will be the primary seats. The back row will be up against the wall out of necessity, so it will be a compromised position in any case. I'll probably add some absorption, but I don't want to deaden it too much. I'll probably see how it measures before going at it.

The reason I want to implement the diffusers early on, is so I can sink them into the wall. Going the full depth of the stud and Drywall will get me around 4" without having to project into the small room. Then a panel with a 2" protrusion can have wells 6" deep. I want to install these before insulation and Drywall.

Sent from my LG-H812 using Tapatalk

- OJ -

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post #14 of 20 Old 07-19-16, 04:00 PM
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Re: Owen's pre-build thread

Really looking forward to watching this theater take to life!
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post #15 of 20 Old 07-20-16, 04:58 AM Thread Starter
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Re: Owen's pre-build thread

Thanks Todd, so am I!

Sent from my LG-H812 using Tapatalk

- OJ -

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post #16 of 20 Old 07-20-16, 06:58 PM
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Re: Owen's pre-build thread

I will be following with interest as well..Good luck with the build Owen..

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post #17 of 20 Old 07-20-16, 07:31 PM
 
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Re: Owen's pre-build thread

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Haha! I was actually already worried that Bryan would find a million problems with this plan. As always though, I'm very happy to have the benefit of his expertise, at least to know what compromises I've made and what the effects will be.

I was thinking a mix of treatment on the rear wall would have benefits to the back row (some absorption) as well as the MLP (a pair of diffusers).

Might as well get it all out there while I'm on it... I'm planning to do 2" of spray foam on the exterior walls, and filling the rest of the leftover cavities with safe n sound. Interior walls will be filled with safe n sound. I know the spray foam does virtually nothing for sound, but I want the security of knowing this place is sealed up tight. I plan to fill all available front wall Corners with traps, and blanket the rest of the wall with absorption. First reflection points will get panels, and the rear wall will have a mix of diffusion and absorption. That's about as far as I've gotten.
If i was to do it again... I would have everything on 24" spacing and fill the cavity with Roxul R60 or R80 Rockboard. I think that would make the room even quieter with R80 in the walls plus double drywall. I told my wife if we ever have the roof redone, and they pull the boards off I am replacing all the insulation with multiple layers of Roxul R80 to stop all the heat coming in from the sun.

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post #18 of 20 Old 11-04-16, 10:00 AM Thread Starter
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Re: Owen's pre-build thread

Thanks Ron, that's something to consider... I think I will definitely go for 24" spacing on the staggered stud wall that will separate the theatre from the rest of the basement. I've been looking at Roxul ComfortBoard 80 for behind the screen wall and acoustic panels throughout. I think it's pretty similar to RockBoard (it's a mineral wool insulation board).

A small update, with some hopes of larger steps forward in the near future. We have been trying to clean up the hoarder's nightmare that is the basement, and have spoken to a family friend who is a framer, and is willing to do the framing for us. I'm hoping it will be sometime in December. We have purchased flooring, which is now sitting in the garage. I'm working on my acoustic plan, and slowly pulling together my ideas.

I'm close to ordering the new speakers as well, and I wanted to float an idea out there. The surround and Atmos ceiling speakers will all be in-wall, in their own enclosures. I'm 99.9% decided on the DIY Sound Group Volt-6LX kits. As far as connecting the speakers, I was considering bypassing traditional binding posts or spring clips, and just drilling a hole in the enclosure to wire directly from the in-wall wire run. Fewer connections, fewer parts... that's a good thing, right? Also, the speakers will be permanently attached, so they won't be coming out without major reconstruction anyway. If anyone has any reasons not to do this, I'd love to hear them.

- OJ -

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post #19 of 20 Old 11-04-16, 12:39 PM
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Re: Owen's pre-build thread

If you are building enclosures for the ceiling speakers, do you plan on designing the fronts with the proper angles to help with aiming? And then sliding them in between existing trusses. That would be a lot more work, but might be worth it.
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post #20 of 20 Old 11-04-16, 02:07 PM Thread Starter
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Re: Owen's pre-build thread

Tonto, Ideally... yes. I have some ideas about either a slightly modified (angled baffle) enclosure OR using a standard enclosure and mounting it at a slight angle with a separate grill cover that sits flush to the ceiling that would point the front Atmos speakers a bit back and "in" towards the listening area. They will sit up between the joists , and there isn't a lot of room to move, but I think I will be able to get at least 10 - 20 degrees of tilt.

Sometimes I consider just putting them in flat, but then I tell myself that I want to do this as correctly as I can the first time, I'm not in a rush, and it will sound better the hard way so just man up and do it already.

The rear Atmos speakers will probably be between the front and back row, and will aim straight down.

- OJ -

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